.header-container {
    display: flex;
    justify-content: space-between;
}

.header-container .inp {
    flex: 1;
    height: 40px;
    line-height: 40px;
    box-sizing: border-box;
    padding: 0 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
}


.header-container input:focus {
    border: 1px solid #cdcdcd;
    outline: none;
}